Used for connecting 2 batteries in parallel to provide double the capacity (whilst keeping the same voltage) and as a result, provide longer flight times without having to purchase larger batteries.
As the same load is applied to both batteries, care must be taken to ensure that both batteries are of the same specification (ideally same model) and both batteries have the necessary capacity (i.e, fully charged and in good condition) to fulfil the requirements of the device being powered. Failure to do so may result in an uneven discharge and damage may occur to either battery as a result.
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